B.
I got my current desk at target , on sale.
Just depends on what you really need if you need lots of desk top space , then the kitchen table might be the best place for studying, so you can spread out, at least that's how I study , or the floor, I study on the floor too. But then I have to have everything in front of me. I would advise that if you have a desktop computer to not close it up in a cabinet that can over heat it. That's a factor on our desk shopping.